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87C749 Datasheet(PDF) 12 Page - NXP Semiconductors |
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87C749 Datasheet(HTML) 12 Page - NXP Semiconductors |
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12 / 22 page  Philips Semiconductors Preliminary specification 83C749/87C749 80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count 1998 Apr 23 12 DC ELECTRICAL CHARACTERISTICS Tamb = 0°C to +70°C, AVCC = 5V ±5, AVSS = 0V4 VCC = 5V ± 10%, VSS = 0V TEST LIMITS4 SYMBOL PARAMETER CONDITIONS MIN TYP1 MAX UNIT ICC Supply current (see Figure 6) Inputs VIL Input low voltage (0 to 70 °C) –0.5 0.2VCC–0.1 V VIH Input high voltage, except X1, RST (0 to 70 °C) 0.2VCC+0.9 VCC+0.5 V VIH1 Input high voltage, X1, RST (0 to 70 °C) 0.7VCC VCC+0.5 V P0.2 VIL1 Input low voltage (0 to 70 °C) –0.5 0.3VCC V VIH2 Input high voltage (0 to 70 °C) 0.7VCC VCC+0.5 V Outputs VOL Output low voltage, ports 1, 3, 0.3, and 0.4 (PWM disabled) IOL = 1.6mA2 0.45 V VOL1 Output low voltage, port 0.2 IOL = 3.2mA2 0.45 V VOH Output high voltage, ports 1, 3, 0.3, and 0.4 (PWM disabled) IOH = –60µA, 2.4 V IOH = –25µA 0.75VCC V IOH = –10µA 0.9VCC V IOH = –400µA 2.4 V VOH2 Output high voltage, P0.4 (PWM enabled) IOH = –40µA 0.9VCC V Port 0.0 and 0.1 – Drivers IOL = 3mA (V ) VOL2 Output low voltage (over VCC range) 0.4 V C Driver, receiver combined: Capacitance 10 pF IIL Logical 0 input current, ports 1, 3, 0.3, and 0.4 (PWM disabled)11 VIN = 0.45V (0 to 70°C) –50 µA ITL Logical 1 to 0 transition current, ports 1, 3, 0.3 and 0.411 VIN = 2V (0 to 70°C) –650 µA ILI Input leakage current, port 0.0, 0.1 and 0.2 0.45 < VIN < VCC ±10 µA RRST Reset pull-down resistor 25 175 k Ω CIO Pin capacitance Test freq = 1MHz, Tamb = 25°C 10 pF IPD Power-down current5 VCC = 2 to 5.5V VCC = 2 to 6.0V (83C749) 50 µA VPP VPP program voltage (87C749 only) VSS = 0V VCC = 5V±10% Tamb = 21°C to 27°C 12.5 13.0 V IPP Program current (87C749 only) VPP = 13.0V 50 mA Analog Inputs (A/D guaranteed only with quartz window covered.) AVCC Analog supply voltage10 AVCC = VCC±0.2V 4.5 5.5 V AICC Analog operating supply current AVCC = 5.12V 3 9 mA AVIN Analog input voltage AVSS–0.2 AVCC+0.2 V CIA Analog input capacitance 15 pF tADS Sampling time 8tCY s tADC Conversion time 40tCY s NOTES ON FOLLOWING PAGE. |
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